Organization and Summary of Significant Accounting Policies - Customers Greater Than Ten Percent of Net Revenue (Parenthetical) (Detail) (Minimum [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Minimum [Member]
Concentration Risk [Line Items]
Percentage representing net revenue by customers	Less than 10% of net revenue	Less than 10% of net revenue	Less than 10% of net revenue